TM 10-5430-243-12&P 0010 00 Change 1 0010 00-6 Table 1.  Operator Preventive Maintenance Checks and Services For 20,000 and 50,000 Gallon Collapsible Water Storage Tanks (continued). ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 16 After Filler/Discharge Assembly, Hose Attachments and Couplings (1, 4) Inspect for damage, leakage, and loose or missing gaskets. Couplings, hose attachments are damaged, loose, or leaking; gaskets are missing.  Hose attachments are straining fabric. 17 After Tank (2) Inspect for cuts, punctures and leaks.  Loose or missing bolts where fittings connect to tank. Tank is cut, punctured, or leaks.  Loose or missing fitting bolts. 18 After Vent Fitting Assembly (3) Check vent cap gasket, flat rubber gasket, and cam- lever arms for damage evidence of leakage, or missing parts.  Check vent cap for cleanliness and freedom of movement.   Check for damaged or missing gaskets.  Inspect vent pipe and fitting for leakage. Vent cap missing or damaged. Vent cap gasket, flat rubber gasket, or cam-lever arms are damaged or missing.  Vent cap binds or is damaged.  Vent pipe leaks or is damaged. 19 After Drain Fitting Assembly (5) Inspect for missing gaskets, chain, or drain plug, damaged coupling arms.   Inspect drain assembly for leakage. Gaskets or drain plug missing.   Coupling arms damaged.  Drain fitting leaks or is damaged. 20 After Drain Ball Valve Assembly (6) Inspect for missing valve handle, gaskets and for proper function.  Inspect valve for leakage. Handle missing.   Valve does not shut off.  Drain ball valve leaks or is damaged. 21 After Drain Hose Assembly (7) Inspect for damaged or missing gaskets, damaged hose and leakage. Hose assembly is damaged or leaks.  Missing or damaged gaskets. 22 After Gate/Ball Valve Assembly (8) Check for proper operation and leakage. Gate/ball valve leaks or will not open/close.